<template>
  <div id="app">
    <el-card shadow="always">
      <el-form :inline="true" size="medium" :model="studentSearch" class="demo-form-inline">
        <!--条件查询-->
        <el-form-item>
          <el-input v-model="studentSearch.sname" placeholder="学生姓名"></el-input>
        </el-form-item>
        <el-form-item>
          <el-input v-model="studentSearch.addr" placeholder="学生住址"></el-input>
        </el-form-item>
        <el-form-item>
          <el-select v-model="studentSearch.cid" placeholder="所在班级">
            <el-option label="所有班级" value="0"></el-option>
            <el-option :label="c.cname" :value="c.cid" v-for="c in classesList" :key="c.cid"></el-option>
          </el-select>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="el-icon-search" plain @click="search">查询</el-button>
        </el-form-item>
      </el-form>
      <el-table
          :data="studentList"
          style="width: 100%">
        <el-table-column
            label="学号"
            align="center"
            prop="sid"
            width="180"/>
        <el-table-column
            label="姓名"
            prop="sname"
            align="center"/>
        <el-table-column
            label="性别"
            prop="sex"
            align="center"/>
        <el-table-column
            label="年龄"
            prop="age"
            align="center"/>
        <el-table-column
            label="住址"
            prop="addr"
            align="center"/>
        <el-table-column
            label="所在班级"
            prop="cname"
            align="center"/>
        <el-table-column label="操作" align="center">
          <template slot-scope="scope">
            <el-button
                size="mini"
                @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
            <el-button
                size="mini"
                type="danger"
                @click="handleDelete(scope.$index, scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!--分页导航面板-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="page"
          :page-sizes="[5, 10, 15, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
import studentApi from "@/api/student"
import classesApi from "@/api/classes"

export default {
  data() {
    return {
      studentList: [],
      page: 1,        // 当前页
      pageSize: 5,    // 每页显示记录条数
      total: 100,     // 总记录数
      studentSearch: {}, // 条件查询对象
      classesList: [],   // 所有班级
    }
  },
  created() {
    //this.findStudents()
    this.search()
    //this.findByPage()
    this.findAllClasses()
  },
  methods: {
    async findStudents() {
      try {
        const { data: res } = await studentApi.findAllStudents()
        //console.log(res)
        if (res.code === 200) {
          this.studentList = res.data.list
        }
      } catch (error) {
        console.error("查询所有学生失败:", error)
      }
    },
    async findByPage() {
      const {data:res} = await studentApi.findByPage(this.page,this.pageSize)
      console.log(res)
      if (res.code === 200) {
        this.studentList = res.data.list.rows
        this.total = res.data.list.total
      }
    },
    async findAllClasses() {
      try {
        const { data: res } = await classesApi.findAllClasses()
        console.log(res)
        if (res.code === 200) {
          this.classesList = res.data.list
        }
      } catch (error) {
        console.error("查询所有班级失败:", error)
      }
    },
    async search() {
      try {
        const { data: res } = await studentApi.search(this.page, this.pageSize, this.studentSearch)
        console.log(res)
        if (res.code === 200) {
          this.studentList = res.data.list.rows
          this.total = res.data.list.total
        }
      } catch (error) {
        console.error("条件查询失败:", error)
      }
    },
    handleSizeChange(val) {
      this.pageSize = val
      this.search()
      //this.findByPage()
      console.log(`每页 ${val} 条`);
    },
    handleCurrentChange(val) {
      this.page = val
      this.search()
      //this.findByPage()
      console.log(`当前页: ${val}`);
    },
    handleEdit(index, row) {
      console.log(index, row);
    },
    handleDelete(index, row) {
      console.log(index, row);
    }
  }
}
</script>

<style>
#app {
  display: flex;
  justify-content: center;
}
.el-card {
  width: 90%;
}
.el-pagination {
  margin-top: 20px;
  text-align: right;
}
</style>
